I know what I have. car is on a lift . I don't know what the motor or trans came from before it was put into this car . It's 360 with a 904 on it 100% . I had it pulled out and rebuilt and looking not for newer flex plate I just bought it , now need a zero balance converter and no one has them.
Sounds like you need a standard 904 converter and a 360 neutral balance flex plate. Unless the 360 you have has been internally balanced. See the confusion?